/*
 * Copyright (C) 2019 Trinity. All rights reserved.
 * Copyright (C) 2019 Wang LianJie <wlanjie888@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.trinity.camera

enum class Reference {

  /**
   * The base reference system has its 'north' aligned with the device natural
   * orientation.
   */
  BASE,

  /**
   * This reference system has its 'north' aligned with the camera sensor.
   */
  SENSOR,

  /**
   * This reference system has its 'north' aligned with the View hierarchy.
   * This can be different than [.BASE] if the activity is allowed to rotate
   * (or forced into a non natural position).
   */
  VIEW,

  /**
   * This reference system has its 'north' aligned with the output picture/video.
   * This means that it takes into account the device orientation.
   */
  OUTPUT
}
